LUA: Add icon path to the widget from GUI bindings

Change-Id: I4f9ac52639e4edb1b65a0637e009a6bbba6998dd
Reviewed-by: Marcus Tillmanns <marcus.tillmanns@qt.io>

src/libs/utils/layoutbuilder.cpp

@@ -3,6 +3,9 @@
 
 #include "layoutbuilder.h"
 
+#include <utils/icon.h>
+#include <utils/filepath.h>
+
 #include <QDebug>
 #include <QFormLayout>
 #include <QGridLayout>
@@ -873,6 +876,17 @@ void PushButton::setText(const QString &text)
     access(this)->setText(text);
 }
 
+void PushButton::setIconPath(const Utils::FilePath &iconPath)
+{
+    if (!iconPath.exists()) {
+        access(this)->setIcon({});
+        return;
+    }
+
+    Utils::Icon icon{iconPath};
+    access(this)->setIcon(icon.icon());
+}
+
 void PushButton::onClicked(const std::function<void ()> &func, QObject *guard)
 {
     QObject::connect(access(this), &QAbstractButton::clicked, guard, func);

src/libs/utils/layoutbuilder.h

@@ -38,6 +38,11 @@ class QVBoxLayout;
 class QWidget;
 QT_END_NAMESPACE
 
+namespace Utils
+{
+class FilePath;
+} // Utils
+
 namespace Layouting {
 
 //////////////////////////////////////////////
@@ -285,6 +290,7 @@ public:
     PushButton(std::initializer_list<I> ps);
 
     void setText(const QString &);
+    void setIconPath(const Utils::FilePath &);
     void onClicked(const std::function<void()> &, QObject *guard);
 };
 

src/plugins/lua/bindings/gui.cpp

@@ -6,6 +6,7 @@
 #include "inheritance.h"
 
 #include <utils/aspects.h>
+#include <utils/filepath.h>
 #include <utils/layoutbuilder.h>
 
 #include <QMetaEnum>
@@ -99,10 +100,16 @@ HAS_MEM_FUNC(setSize, hasSetSize);
 HAS_MEM_FUNC(setWindowFlags, hasSetWindowFlags);
 HAS_MEM_FUNC(setWidgetAttribute, hasSetWidgetAttribute);
 HAS_MEM_FUNC(setAutoFillBackground, hasSetAutoFillBackground);
+HAS_MEM_FUNC(setIconPath, hasSetIconPath);
 
 template<class T>
-void setProperties(std::unique_ptr<T> &item, const sol::table &children, QObject *guard)
+void setProperties(std::unique_ptr<T> &item, const sol::table &children, QObject *guard) {
-{
+    if constexpr (hasSetIconPath<T, void (T::*)(const Utils::FilePath &)>::value) {
+        const auto iconPath = children.get<sol::optional<Utils::FilePath>>("iconPath");
+        if (iconPath)
+            item->setIconPath(*iconPath);
+    }
+
     if constexpr (hasSetWindowFlags<T, void (T::*)(Qt::WindowFlags)>::value) {
         sol::optional<sol::table> windowFlags = children.get<sol::optional<sol::table>>(
             "windowFlags");

src/plugins/lua/meta/gui.lua

@@ -30,6 +30,7 @@ gui.baseWidgetOptions = {}
 ---@field title? string The title of the widget, if applicable.
 ---@field onTextChanged? function The function to be called when the text of the widget changes, if applicable.
 ---@field onClicked? function The function to be called when the widget is clicked, if applicable.
+---@field iconPath? FilePath The path to the icon of the widget, if applicable. Empty or not existent paths set null icon. (see [QIcon](https://doc.qt.io/qt-5/qicon.html#QIcon))
 ---@field text? string The text of the widget, if applicable.
 ---@field value? integer The value of the widget, if applicable.
 ---@field [1]? Layout The layout of the widget, if applicable.